Finding the Fourth Proportional to 9,715.72, 14,560.62 and 5,557

Step by Step Solution

1. Step 1: Write the proportion equation
   9,715.72 : 14,560.62 = 5,557 : x
2. Step 2: Convert to fraction form
   9,715.72/14,560.62 = 5,557/x
3. Step 3: Cross multiply
   9,715.72x = 14,560.62 × 5,557
4. Step 4: Simplify right side
   9,715.72x = 80,913,365.34
5. Step 5: Solve for x
   x = 80,913,365.34/9,715.72
6. Step 6: Final answer
   x = 8,328.09